Incubus / Succubus: An incubus is known as a male erotic demon. This type of paranormal entity is known to assault victims while remaining invisible, the victim may feel as if they are being pleasured or assaulted in a sexual manner. A succubus is the female version of an incubus. In lore, incubus and succubus take on the form of a beautiful person, irresistable to their victims.